| 系杆拱桥吊杆初始张拉力的计算方法 |
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| 引用本文： | 彭宣茂.系杆拱桥吊杆初始张拉力的计算方法[J].水利水电科技进展,2000,20(6):32-33. |
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| 作者姓名： | 彭宣茂 |
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| 作者单位： | 河海大学土木工程学院,江苏,南京,210098 |
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| 摘 要： | 针对系杆拱桥施工中的吊杆初始张拉力问题提出一种新的简单实用方法 .该法以每根吊杆应该施加的初始张拉力为基本未知值 ,根据吊杆的张拉顺序 ,采用结构变刚度有限元法求出单位力作用下的吊杆内力矩阵 ,建立典型方程 .通过简单的回代方法求出每根吊杆的初始张拉力 ,从而使得最终吊杆的预张拉力达到规定的设计值 .
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| 关 键 词： | 系杆拱桥 预应力 内力矩阵 回代 |
| 修稿时间： | 2004/11/11 0:00:00 |
Computational Method for Analysis of Rod Initial Tension of Bowstring Arch Bridges |
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| PENG Xuan-mao.Computational Method for Analysis of Rod Initial Tension of Bowstring Arch Bridges[J].Advances in Science and Technology of Water Resources,2000,20(6):32-33. |
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| Authors: | PENG Xuan-mao |
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| Abstract: | A practical computational method is proposed for analysis of the initial tension in rods during construction of bowstring arch bridges.According to the sequence of rod tension,the initial prestress is considered to be an unknown variable,and the matrix of tension is resolved by stiffness FEM.The initial tension in the rod is found out by iteration,so that the prestress of the rod reaches the design value. |
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| Keywords: | bowstring arch bridge prestress tension matrix iteration |
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